I'm looking for any suggestions on a sweepable analogue high-shelf EQ that can go down at least to 1 khz. Gentle slope is fine, in fact I've considered making a passive one, made with discrete components, to use just for attenuation, but if there's a quick and cheap solution with little to no discernible distortion, I'd like to try that first.

"Lots of people are nostalgic for analogue. I suspect they're people who never had to work with it." - Brian Eno